Question

# A concave mirror produces three times magnified (enlarged) real image of an object placed at $10cm$ in front of it. Where is the image located?

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Solution

## Step 1: Given dataMagnification ($m$)= $-3$ (negative because image is real)Object distance ($u$)= $-10cm$ (negative because it is on the left side of the mirror)Step 2: Formula usedAccording to the magnification formula $m=\frac{-v}{u}$Step 3: Solution$v=-\left(u\right)×\left(m\right)\phantom{\rule{0ex}{0ex}}=-\left(-10\right)×\left(-3\right)\phantom{\rule{0ex}{0ex}}=-30cm$Thus, the image is located $30cm$ in front of the mirror.

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